User Charge Estimation in Numeric Online Databases: A Methodology |
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Page 26
... founded suggestions on how it is applied to databases based on other data models and to non - numeric databases . In other words , it should provide a sound architecture for systematic manipulation of all components necessary in user ...
... founded suggestions on how it is applied to databases based on other data models and to non - numeric databases . In other words , it should provide a sound architecture for systematic manipulation of all components necessary in user ...
Page 27
... founded suggestions on the information necessary for user charge estimation . The types of information can be categorized ( see Sections 2.1 . and 3.3 . ) into information on user queries , databases and the hw / sw environment . Let us ...
... founded suggestions on the information necessary for user charge estimation . The types of information can be categorized ( see Sections 2.1 . and 3.3 . ) into information on user queries , databases and the hw / sw environment . Let us ...
Page 31
... founded suggestions concerning the types of representations and methods required for query cost modelling and other problems related to user charge estimation . Although file descriptions and functions for constructing them must be ...
... founded suggestions concerning the types of representations and methods required for query cost modelling and other problems related to user charge estimation . Although file descriptions and functions for constructing them must be ...
Contents
USER CHARGING | 13 |
THE RELATIONAL DATA MODEL | 20 |
CARDINALITY ESTIMATION IN NUMERIC ONLINE | 32 |
Copyright | |
7 other sections not shown
Common terms and phrases
A-names access strategy Appendix approach attribute description set attribute name set attribute selectivity attribute values attributes PRODUCT-NO basis BDBs candidate keys cardinality estimation charging methods CODATA components computed connect-time considered constructed data model database files Database Management Database Management Systems database user developed elementary predicates English Summary example expression F1 and F2 FD-set file design file organization file structures Finland functional dependencies implementation information retrieval Information Science intermediate files inverted file Järvelin join attribute join predicate julkaisuja manipulation MANUF-NO MARKET-SHARE methodology n-tuple NDBs Numeric Databases online databases operand file description procedure cost model processing cost PRODUCTS file QSALES query cardinality query cost modelling query negotiation query optimization query processing query results r-card r-description RA operations records relational algebra relational data model restriction predicate result file description SIGMOD sort-key storage parameters Systems TAHITI TRADEMARK TYPE unit charges University of Tampere upper bound user charge estimation vendor